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FF lenses for the K-1 that can be bought new
Posted By: Class A, 02-20-2016, 07:36 AM

We all know there is a ton of great FF glass available on the used market that will work great with the K-1.

However, which are the currently available FF lenses (in current catalogues of lens manufacturers) that can be used with the K-1?

Below is a list that started with an initial compilation I did and then attracted a number of later additions by several contributors. There may be still some missing and please post to this thread with information about the lens (but please make sure the lens is in production). I'll then add it to the list.

If you have used any of the listed lenses on the K-1 and find that they do not perform like a proper FF lens, please post to this thread as well. There are some DA (APS-C) lenses included which have been tested as "good for FF" on film cameras but due to differences between film and digital sensors, there may be a few surprises (although I tried to be conservative and only included those that would be true surprises if they failed the "K-1 test".)

Thanks in advance.

P.S.: I realise that there is also another current FF lenses overview but the latter contains discontinued lenses and I think there is value in maintaining a list of lenses that can be bought brand new. Not everyone is prepared to go hunting on the used market. A very nice feature of the aforementioned alternative compilation is that many third-party FF lenses can found organised in roadmap-style charts.

Regarding the suitability of certain DA (APS-C) lenses, I included a few that a truly FF capable based on their design and user reports. There is a far larger number of DA lenses with OK to marginal performance on an FF camera. These have not been included in this list, even though some users may find them acceptable (in particular using the K-1's 1:1 crop mode). A useful resource on the performance of DA lenses on an FF camera is falconeye's "DA lenses on Full Frame: Test shots" thread.

Pentax
Zooms
HD Pentax-D FA 15-30mm F2.8 ED SDM WR
HD Pentax-D FA 24-70mm F2.8 ED SDM WR
HD Pentax-D FA 28-105mm F3.5-5.6 ED DC WR
HD Pentax-D FA* 70-200mm F2.8 ED DC AW
HD Pentax-D FA 150-450mm F4.5-5.6 ED DC AW

SMC Pentax-DA* 60-250mm F4 ED [IF] SDM
(some vignetting in particular at 250 but very usable;
some owners replace an internal baffle to reduce the vignetting)

Primes
SMC Pentax-FA 31mm F1.8 AL Limited
SMC Pentax-FA 43mm F1.9 Limited
SMC Pentax-FA 77mm F1.8 Limited

SMC Pentax-FA 35mm f/2.0 AL
SMC Pentax-FA 50mm F1.4

SMC Pentax-D FA 50mm F2.8 Macro
SMC Pentax-D FA 100mm F2.8 Macro WR

SMC Pentax-DA 35mm F2.4 AL
SMC Pentax-DA 50mm F1.8
SMC Pentax-DA* 55mm F1.4 SDM
SMC Pentax-DA* 200mm F2.8 ED [IF] SDM
SMC Pentax-DA* 300mm F4 ED [IF] SDM
HD Pentax-DA 560mm F5.6 ED AW

Sigma
Zooms
70-300mm F4-5.6 APO DG Macro
70-300mm F4-5.6 DG Macro
50-500mm F4.5-6.3 APO DG OS HSM

Primes
15mm F2.8 EX DG Diagonal Fisheye
28mm F1.8 EX DG ASP RF
35mm F1.4 DG HSM | A
85mm F1.4 EX DG HSM
300mm F2.8 EX APO DG (HSM)*
500mm F4.5 EX DG APO (HSM)*

Tamron
Zooms
SP AF 28-75mm f/2.8 XR Di LD Aspherical Macro
SP AF 70-200mm f/2.8 Di LD Macro
AF 28-300mm f/3.5-6.3 XR Di LD Aspherical Macro
AF 70-300mm f/4-5.6 Di LD Aspherical Macro

Primes
SP AF 90mm f/2.8 Di Macro

Samyang
Primes
12mm F2.8 ED AS NCS Fisheye
14mm F2.8 ED AS IF UMC
20mm F1.8 ED AS UMC
24mm F1.4 ED AS IF UMC
24mm F3.5 ED AS UMC TILT/SHIFT
35mm F1.4 AS UMC
50mm F1.4 AS UMC
85mm f/1.4 AS IF UMC
100mm f/2.8 Macro
135mm f/2 ED UMC
(Most, if not all, of the above are also available as "Cine" lenses that for instance feature click-less apertures.)

500mm MC f/6.3 Mirror (best Samyang mirror lens, decent sharpness but awful bokeh)
500mm MC IF f/8 Mirror
800mm MC f/8 Mirror
500mm MC f/8 Preset (not mirror, a little bit long but very light with decent sharpness)
650-1300mm f/8-f/16 (long and light, almost usefull as a monopod)
(The above comments come courtesy of banep, thanks!)

Schneider-Kreuznach
Primes
PC-TS 4.5/28MM Super-Angulon Tilt/Shift
PC-TS 2.8/50MM Super-Angulon Tilt/Shift
PC-TS 4.5/90MM Makro Symmar Tilt/Shift

Laowa (Venus Optics)
Primes
12mm f/2.8 (Zero-D)
15mm f/4 1:1 Macro
25mm f/2.8 Ultra Macro (2.5-5 x magnification, no infinity focus)
60mm f/2.8 2:1 Macro (2x life size magnification)
100mm f/2.8 2X Ultra Macro APO (2x life size magnification)
105mm f/2 (t/3.2) STF (Smooth Transition Focus)

Irix
Primes
Irix 15mm f/2.4
Irix 11mm f/4 (tentative release date: early 2017)
Irix 45mm f/1.4 (tentative release date: 2017)

AraxFoto
Arax 35mm f/2.8 Tilt & Shift
Arax 80mm f/2.8 Tilt & Shift

Meyer-Optik Görlitz
Primes
Lydith 30mm f/3.5
Trioplan 35+ f/2.8
Nocturnus 50 mm f/0.95 (DSLR variant)
Primotar X 50mm f/2.8
Trioplan 50mm f/2.9
Primoplan 58mm f/1.9
Primoplan 75mm f/1.9
P75 II (advanced version of the Primoplan 75)
Somnium II 85mm f/1.5
Trioplan 100mm f/2.8
Apo-Makro-Plasmat 105mm f/2.7

net SE (-> resurrection of Meyer-Optik Görlitz, Emil Busch and Oprema Jena lenses)
C. P. Goerz Citograph 50mm f/2.8 (currently a Kickstarter project)
Emil Busch Glaukar Anastigmat 97mm f/3.1 (scaled version of the 1910 Glaukar 210mm f/3.1, a lens for 8x10cm and 13x18cm field cameras)
Oprema Jena Biotar 75mm f/1.5 (re-edition of the Carl Zeiss Biotar 75mm f/1.5 (Willy Merté, 1938))

Zhong Yi Optics
Primes
Mitakon 20mm f/2 4.5x Super Macro
Mitakon Creator 35mm f/2
Mitakon 85mm F1.2
Mitakon 85mm F2
Mitakon Creator 135mm f/2.8 version II
Mitakon Speedmaster 135mm F1.4

Lensbaby
Primes
Burnside 35 (with variable vignetting)
Velvet 56
Velvet 85

Dongzheng Optics
Primes
Kerlee 35 mm f/1.2 (info)

Lomography
Primes
Daguerreotype Achromat 64mm f/2.9 Art (info)
Naiad 15mm F3.5 Art (135° FOV, 1cm close focusing)

Kenko Tokina
Primes
Kenko Tokina 400 mm f/8 N II mirror lens (T-mount with K-mount adapter included).

KMZ (sometimes difficult to buy outside Russia; some are easily available though)
Primes
MC Zenitar-K 16mm f/2.8 fisheye
MC Zenitar-K 20mm f/2.8
MC Zenitar-K 28mm f/2.8
MC Zenitar-K 50mm f/1.4
MC Zenitar-K 50mm f/1.9
MC Zenitar-K 50mm f/2
MC Zenitar-1K 85mm f/1.4
Helios-40-2 85mm f/1.5
MC Apo Telezenitar-K 135mm f/2.8
MC Apo Telezenitar-K 300mm f/4.5

Zooms
MC Variozenitar-K 25-45mm f/2.8-3.5
MC Variozenitar-K 35-70mm f/3.2-4.5
MC Variozenitar-K 35-105mm f/3.5-4.5
MC Variozenitar-K 70-210mm f/4

Last edited by Class A; 06-10-2018 at 05:47 AM.
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02-20-2016, 09:07 AM   #16
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QuoteOriginally posted by Lightograph Quote
You can add Sigma 70 mm Macro f/2.8
Thanks, but the Sigma site says it is discontinued.

I have that lens, it is great and I would have loved to add it, but apparently Sigma does not manufacture it anymore.

02-20-2016, 09:14 AM   #17
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QuoteOriginally posted by beholder3 Quote
You might as well refer to the thread https://www.pentaxforums.com/forums/169-pentax-full-frame/313830-current-pent...ml#post3539798 which was stickied in the Full Format subforum.
I do refer to that thread in my first post (see the "P.S.:...").

Thanks a lot for that effort, but I don't think it makes this one redundant.

Initially, when I started to think about this thread, I wasn't aware of the other thread but even once I discovered it I came to the conclusion that this thread still makes sense. The reason is that the other thread mixes currently available and discontinued lenses (without differentiating between them). AFAIC, as soon as one includes discontinued lenses, one may as well include all K-mount FF lenses ever made. If I have to go hunting for a lens on the used market what difference does it make whether it is a relatively modern Sigma 50-150mm or an older FA* 85/1.4?

In short, I think there is value for a list that only includes lenses currently on offer (no exceptions made). I hope you agree.
02-20-2016, 09:18 AM - 1 Like   #18
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QuoteOriginally posted by Clinton Quote
@Class A , the A 50/1.2 can be purchased new in some markets. Does this make sense to add?
Source? I should think they're drawing from a reserve of unsold stock here - it's almost impossible to believe there are any new unsold ones left after so long!

(This is one of those things I would be delighted to be wrong about. Fancifully I imagine that somewhere in a factory in Japan, an ancient and long-forgotten lens-maker who began as a fresh-faced youth dashes as frantically as he still can, up and down the assembly line putting together lenses long thought discontinued. Every few months, he packs up a small batch and sends them out to the same back-alley store in the deep heart of Tokyo he's been shipping them to for decades... The pace of work is so slow, the overheads so minimal, the new components ordered in so infrequent, that they are not even blips on the Ricoh expenses sheet. And somewhere else, in another forgotten factory, at an even more glacial pace, a fellow technician who never got the cancellation memo assembles perfectly functional MZ-D's... As Arthur slumbering in Avalon shall one day rescue England, this dedicated pair of company men toils away against the day of Pentax's greatest need... )
02-20-2016, 09:19 AM   #19
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QuoteOriginally posted by Clinton Quote
@Class A , the A 50/1.2 can be purchased new in some markets. Does this make sense to add?
Thanks for the info.

I did a quick search and it did not turn up anything.

Do you have a pointer to a shop that sells them?

02-20-2016, 09:36 AM   #20
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QuoteOriginally posted by Class A Quote
In short, I think there is value for a list that only includes lenses currently on offer (no exceptions made). I hope you agree.
I can't agree fully, because inevitably you will run into a large grey zone of definitions and theories and viewpoints. I only put lenses on my list in the https://www.pentaxforums.com/forums/169-pentax-full-frame/313830-current-pent...w-picture.html thread which I found easily buyable new where I live.

I do not think that "discontinued" makes a lot of sense, since lenses are produced in large batches and they go in and out of production regularly.
I am quite sure the 1.8 primes from Sigma are not in production for PK anymore (=discontinued). But since it's easy enough to buy them new I do include them.
The FA limiteds have been out of production for three years and only recently the production has started again.
We also never know when a lens is actually "discontinued". Most is rumor and hearsay.

The key point is: can somebody purchase a lens new without major issues? As long as I find the lens easily within reach that is good enough. Regardless of it being fresh from the production conveyor belt or from a secret cache of a million lenses in somebodies backyard.

Whatever, it's a grey zone and everybody will see the world differently.
02-20-2016, 09:41 AM   #21
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Looks like I'm a source of misinformation today. For a while in the past couple of years, it was available for special order for something like $1400, and was available (I think) though B&H and also from Amazon JP, but when I look now, this ship has sailed.
02-20-2016, 09:41 AM   #22
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QuoteOriginally posted by Clinton Quote
@Class A , the A 50/1.2 can be purchased new in some markets. Does this make sense to add?
Several years ago - yes. But not now
02-20-2016, 09:54 AM   #23
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Are we sure about the 28-300mm Tamron in Pentax mount?
The Canadian distributor doesn't list that lens in anything other than Nikon, Canon and Sony mounts. They have the others though.

02-20-2016, 10:03 AM   #24
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You could add the Mikaton Zhongyi lenses. The 85mm f/2, 135mm f/2.8 II and 35mm f/2 seem to be available in K-Mount. The Lensbaby Velvet 56mm f/1.6 is also listed as in-stock on B&H for K-Mount. Not sure if their circular fisheye should really count as a full-frame lens, even though it's described as such. The Venus Optics Laowa 60mm f/2.8 Ultra-Macro is an especially interesting just recently released FF product, also for Pentax-K.
02-20-2016, 10:05 AM   #25
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Horus Bennu has a 50mm f1.7 for Pentax K, but it is like M series lenses (no AF, no A)
Zenitar makes some lenses that are still sold in Pentax K (50mm prime, but also some telephoto zooms I think). I think you can get the new Helios 85mm in K mount, as well as that brass Petzval 85mm lens.
Mitakon has some FF lenses for Pentax K, but these are fully manual (basically a preset manual aperture)
Holga has some K lenses, but it is arguable whether they are FF (as some are rather low quality even on APSC, but they are also sold for FF mounts). There are some thread about these. Some are for K mount and some for Q.
Then there are those Samyang and other mirror and telescope super telephotos (with preset aperture and fairly bad IQ)
Lensbaby makes some things, but I think those are a whole system unto themselves.
Venus Laowa has some interesting stuff coming up.
Arsat (Arax?) makes some lenses still in K mount and m42, I think.
Schneider Kreuznach, as well.
And what is that German rebadge company, Görlitz? Its not the same as the good old fashioned Görlitz (someone just bought that old company name to cash in on their reputation), many lenses are just Mitakon rebadges. But still.
There are some pinholes, as well. Skink makes some, but many are "no name" and can be only found on ebay or such sites.

Oh, and Pentax FA 35mm f2, FA 50mm f1.4, and FA 20-35mm were recently (still are?) available as new in Japan. And possibly some FA J zooms as well. Maybe it was old stock and limited to Japan

Last edited by Na Horuk; 02-20-2016 at 11:58 AM.
02-20-2016, 10:07 AM   #26
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QuoteOriginally posted by beholder3 Quote
I only put lenses on my list in the https://www.pentaxforums.com/forums/169-pentax-full-frame/313830-current-pent...w-picture.html thread which I found easily buyable new where I live.
OK, but what good is it for me if I see a Sigma 50-500mm on your list and cannot buy it anywhere where I live (importing included)?

And I don't think you can still buy a Sigma 70mm f/2.8 EX Macro new where you live, for example.

QuoteOriginally posted by beholder3 Quote
The key point is: can somebody purchase a lens new without major issues?
I agree, but I don't see any "grey zones" when this criterion is applied with the understanding that "available" cannot mean "one brick & mortar shop in the US still has two copies of the lens".

EDIT: My simple, clear-cut, "no grey zone" criterion is whether the lens manufacturer includes the lens in their current catalogue. I don't mean "discontinued" in the sense that some online dealers use it. I mean it in the sense that the lens manufacturer has moved the lens from the current catalogue into the legacy catalogue.

Last edited by Class A; 02-20-2016 at 08:20 PM.
02-20-2016, 10:19 AM - 1 Like   #27
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I would only include lenses that are in production.

Add the laowa 15mm, Mitakon 85mm, and Schneider 24, 50, and 85 T/S to your list . Not the most popular choices, but they're available.

Here's a dynamic list of current lenses officially designated as FF:

Full frame lenses

I think you got most of them, but it should be safe to link to that page since it will also include any future lenses.

BTW, I believe the Sigma 24 and 28 primes are discontinued too.

Tamron 28-300 should still be available.
02-20-2016, 10:20 AM - 1 Like   #28
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QuoteOriginally posted by Ontarian50 Quote
Are we sure about the 28-300mm Tamron in Pentax mount?
The Canadian distributor doesn't list that lens in anything other than Nikon, Canon and Sony mounts. They have the others though.
I have that lens, bought brand new 2 years ago. Slow, very light, very compact, very good at wide end, excellent at 200-300m. Sharpest at 300mm. Excellent macro @300mm. I used it a few times for my vacations and i will probably sold it after testing on K-1. Problem is that IQ is below acceptable in the middle range 135mm +/- 35mm.

Last edited by banep; 02-20-2016 at 10:35 AM.
02-20-2016, 10:21 AM   #29
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QuoteOriginally posted by Class A Quote
And I don't think you can still buy a Sigma 70mm f/2.8 EX Macro new where you live, for example.
But come on, we are talking about a global market; there are bound to be huge differences in price, availability. Recently I was on the Canary islands and a store was selling a K110D in box, unopened. We know that's just one store that happens to be.. um, uninformed and still keeps that camera around. But Sigma 70mm is "officially available", even if it cannot be found in most stores. The idea is that one lens is in theory still available as new, while the camera is not available as new according to the official sources, even if some stores carry it. That's how I see it.
For example, you can find Zenitar lenses in K mount, but these are only sold in a couple cities in Russia, if that. Still available as new, from the official factory. How does it matter if it is unavailable in brick and mortar stores in Sweden? In South Africa? In USA?

Edit: I did not know Sigma 70mm macro was now officially discontinued by Sigma. Didn't get that memo

Last edited by Na Horuk; 02-20-2016 at 12:02 PM.
02-20-2016, 10:50 AM - 2 Likes   #30
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There are a few additional exotic Samyang telephoto lenses.
They are not great, but hey, they can be bought brand new in K mount:
Samyang 500mm MC f/6.3 Mirror (best Samyang mirror lens, decent sharpness but awful bokeh)
Samyang 500mm MC IF f/8 Mirror
Samyang 800mm MC f/8 Mirror
Samyang 500mm MC f/8 Preset (not mirror, a little bit long but very light with decent sharpness)
Samyang 650-1300mm f/8-f/16 (long and light, almost usefull as a monopod)

In addition to that Lensbaby Composer Pro is probably also full frame lens and it is available in K mount.
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